Abstract
Software-defined networking (SDN) is moving from its initial deployment in small-scale data center networks to large-scale carrier-grade networks. In such environments, high availability and scalability are two of the most prominent issues and thus extensive work is ongoing. In this paper, a well-known open source project, OpenDaylight (ODL) is analyzed in terms of network state database partition/synchronization and controller failover/load balancing mechanisms. We also present experimental results on the flow rule installation throughput and the failover time upon a controller failure in ODL.
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